Marseille 15 weather in September

In September, Marseille 15 sees average daytime highs of 23°C and overnight lows near 18°C, with 64 mm of rain across 5.6 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 25°C in the first days to 21°C by the end. The sky is clear or mostly clear about 60% of the time in September, and the air most often feels humid.

Daylight stretches from about 13 hours at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Marseille 15's 4th-clearest and 9th-windiest month. For the whole year in context, see Marseille 15's year-round climate.

Daytime high
23°
4th warmest
Overnight low
18°
9th coldest
Rainfall
64 mm
5.6 wet days
Daylight
12 h 18 min
6:24 AM – 6:42 PM
Cloud cover
36%
4th clearest
Wind
18 km/h
9th windiest
Solar energy
4.85 kWh/m²
Travel score
7.9
out of 10

Marseille 15 is municipal arrondissement of Marseille, France.

Density
4,602/km²
people per km²

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 25°C in the first days to 21°C by the end.

A typical September day in Marseille 15 reaches about 23°C in the afternoon and slips back to 18°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 26°C. Set against its neighbours, September runs about 3°C cooler than August and about 4°C warmer than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12520
22519
32519
42419
52419
62419
72419
82419
92419
102419
112418
122318
132318
142318
152318
162318
172318
182318
192318
202217
212217
222217
232217
242217
252217
262217
272217
282217
292117
302117

Marseille 15 weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan11° / 597.49.23.2
Feb12° / 405.510.23.5
Mar14° / 375.611.64.8
Apr16° / 11°587.213.25.7
May20° / 15°425.714.57.0
Jun23° / 18°213.715.28.3
Jul26° / 21°101.814.98.7
Aug26° / 21°142.413.88.4
Sep23° / 18°645.612.37.9
Oct19° / 15°828.210.86.6
Nov15° / 11°929.99.54.7
Dec12° / 587.88.83.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 60% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 13% of September, with mostly cloudy or overcast conditions the remaining 26%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17921
27822
37822
47822
57822
67822
77723
87723
97723
107624
117624
127624
137525
147426
157426
167426
177327
187228
197228
207228
217129
227030
237030
246931
256931
266931
276931
286931
296931
306733

Chance of precipitation in September

Any precipitation

Marseille 15 gets around 64 mm of rain over 5.6 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 18% and peaks near 20% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
113
214
314
415
516
616
717
817
918
1018
1119
1219
1319
1419
1520
1620
1720
1820
1920
2020
2120
2220
2320
2420
2520
2620
2720
2820
2920
3020

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the humid band about 30% of days. Sticky, muggy-or-worse air turns up on roughly 17% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1212225284
2222226273
3222226263
4232327252
5232328242
6232328241
7232429231
8242429221
9242529221
10242529210
11242529210
12242629200
13242729200
14242729190
15242829180
16252829170
17252930160
18262930150
19263030140
20273030130
21273131110
22283131100
2328313190
2428323290
2529323280
2630313270
2731313260
2832313260
2933303150
3034303150

Wind in September

Winds average 18 km/h in September.

Across September, daily wind ranges from about 18 km/h on the calmest days to 19 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202530
Wind speed (km/h)Feels
118light breeze
218light breeze
318light breeze
418light breeze
518light breeze
618light breeze
718light breeze
818light breeze
918light breeze
1018light breeze
1118light breeze
1218light breeze
1318light breeze
1418light breeze
1518light breeze
1618light breeze
1718light breeze
1818light breeze
1918light breeze
2018light breeze
2118light breeze
2219light breeze
2319light breeze
2419light breeze
2519light breeze
2619light breeze
2719light breeze
2819light breeze
2919light breeze
3019light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 hours at the start of September to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 84 minutes over September. Sunrise moves from 6:07 AM to 6:40 AM, and sunset from 7:10 PM to 6:15 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.06:077:10
213.06:087:08
312.96:097:06
412.96:107:04
512.86:127:02
612.86:137:00
712.76:146:59
812.76:156:57
912.66:166:55
1012.66:176:53
1112.56:186:51
1212.56:206:49
1312.46:216:47
1412.46:226:45
1512.36:236:44
1612.36:246:42
1712.26:256:40
1812.26:266:38
1912.16:286:36
2012.16:296:34
2112.06:306:32
2212.06:316:30
2311.96:326:28
2411.96:336:27
2511.86:356:25
2611.86:366:23
2711.76:376:21
2811.76:386:19
2911.66:396:17
3011.66:406:15

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.85 kWh/m².

For context, solar energy here swings from a low near 1.64 kWh/m² to a high of 7.38 kWh/m² in July across the year — September's 4.85 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.7Bright
25.6Bright
35.6Bright
45.5Bright
55.5Bright
65.4Bright
75.3Bright
85.3Bright
95.2Bright
105.2Bright
115.1Bright
125.0Bright
135.0Bright
144.9Bright
154.9Bright
164.8Bright
174.8Bright
184.7Bright
194.6Bright
204.6Bright
214.5Bright
224.5Bright
234.4Bright
244.4Bright
254.3Bright
264.3Bright
274.2Bright
284.2Bright
294.1Bright
304.0Bright
Planning a trip in September

Hazard calendar for Marseille 15

In seasonPeak

In September, Marseille 15 sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Marseille 15's rainy season runs September–January, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Marseille 15?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

7.9
Sightseeing
4th-best month of the year
6.1
Beach & pool
4th-best month of the year

September is one of the better times to visit Marseille 15 for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Marseille 15 in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, Marseille 15 sees daytime highs around 23°C and nights near 18°C. Worth packing: light clothes and sun protection. About 6 days see rain.

light clothessun protection

Sea temperature near Marseille 15 in September

The nearest coast averages about 21°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 22°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 29 to Sep 30 — about 3.1 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan13Bracing
Feb13Bracing
Mar13Bracing
Apr14Bracing
May16Cool
Jun19Cool
Jul21Refreshing
Aug22Refreshing
Sep21Refreshing
Oct19Cool
Nov17Cool
Dec15Bracing

UV index in Marseille 15 in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Marseille 15 peaks around July 15 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 15UV 9Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar4Moderate
Apr6High
May6High
Jun8Very high
Jul9Very high
Aug7High
Sep5High
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Marseille 15 in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Marseille 15 is worst in March — around 17 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodMar 2417 µg/m³Nov 1911 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb15Moderate
Mar17Moderate
Apr17Moderate
May15Moderate
Jun16Moderate
Jul14Moderate
Aug15Moderate
Sep13Moderate
Oct13Moderate
Nov11Good
Dec12Moderate
Location & terrain

Where is Marseille 15?

Marseille 15 sits at 43.4°N, 5.4°E, 153 m above sea level, in France. The nearest listed city is Marseille 16, 2.0 km away.

Topography around Marseille 15

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Marseille 15.

Within 3 km, the terrain around Marseille 15 has significant variations in elevation — a maximum elevation change of 303 m around an average of 158 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 773 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,261 m.

The land around Marseille 15 is covered by artificial surfaces (50%), trees (23%) and shrubs (21%) within 3 km, trees (30%), artificial surfaces (24%) and water (21%) within 16 km, and trees (42%) and water (34%) within 80 km.

3 km
303 m
16 km
773 m
80 km
1,261 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Marseille 16 2.0 km · Marseille 14 4.0 km · Les Pennes-Mirabeau 6.0 km · Saint-Barthélémy 6.0 km · Marseille 13 7.0 km · Marseille 03 8.0 km · Marseille 02 9.0 km · Marseille 01 9.0 km

France travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / E
230 V · 50 Hz
Prices
≈ 77% of US
price level, 2025
GDP per capita
$48,986
2025
Happiness
6.6 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
1.3
per 100k, 2023
Road deaths
5.1
per 100k/yr, 2019
Income group
High
World Bank
English
Moderate
EF EPI 539
Religion
Roman Catholic 47%none 33%Muslim 4%Protestant 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Marseille 15 (43.3722°, 5.3539°, elevation 153 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).